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Mouvee
@Mouvee
April 2019
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Aidez svp il est impossible ..
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Verified answer
Aire = l * x avec l = 21-2x
Aire =(21-2x) x
Aire(3)=45m²
valeurs possibles 0< x < 21/2 donc 0<x<10.5
A(x)=(21-2x)x=21x-2x²
Le Max sur le dessin
A(5.25)-A(x)= 55.125 - 21x+2x²
2( 27.5625 - 10.5 x +x²)
2 (5.25² - 2 * 5.25 x + x²)
2(5.25-x)²
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Lista de comentários
Verified answer
Aire = l * x avec l = 21-2xAire =(21-2x) x
Aire(3)=45m²
valeurs possibles 0< x < 21/2 donc 0<x<10.5
A(x)=(21-2x)x=21x-2x²
Le Max sur le dessin
A(5.25)-A(x)= 55.125 - 21x+2x²
2( 27.5625 - 10.5 x +x²)
2 (5.25² - 2 * 5.25 x + x²)
2(5.25-x)²